TY - BOOK AU - AU - TI - selection and use of essential medicines: report of the WHO expert committee 2003 (including the 13th model list of essential medicines) SN - 9-2412-0920-8 U1 - 615.2 PY - 2003/// CY - Geneva PB - World Health Organisation KW - Essential drugs- standards KW - Formularies- Standards KW - Drug information services KW - Pharmaceutical preparations- Classification ER -